Falling back into OL-1/Misfiring/Rough Idle No CODES
OK, have some wierd issues here. Anybody that could give a hand, I'd appreciate it.
I have a AutoTap Scan Tool on my laptop, I have all the data available, I understand a fair amount, but certainly not it all!
My 97 SSE Idles Rough
114K Miles, Newer Stuff since 70K:
Alternator, Plugs x2, Wires x2, Fuel Pump, Fuel Sender Unit,
UIM Gasket/UIM, blah blah all the typical stuff... Prob
new Water Pump this weekend, thou its not related to what I'm posting.
Saved a scan to a Excel spread sheet this morning on my way into work. In some free time, I was just looking at it. Noticed:
-Long Term Fuel Trim is mostly always hi(gher), above 7 or 8%, quite oven hits 15 and 16%, which I read in AutoTap MAY indicate a lean condition.
-Noticed It Falls back into Open Loop-1 for a second or two, then goes back to closed. I don't see any pattern to it
-Sporadic Misfiring. NOT EVEN across the cylinders, ranges from hitting 1 or 2 cylinders to 4 at once. Stays between 1-4 misfires on each current cylinder being hit.
-"O2 Monitoring Status" finally completes 10 minutes into my drive. ?
-If you just look over the numbers for O2 Sensors 1&2, Sens1 seems very erratic. Sens2, while the numbers very greatly and quickly, seems to flow better. Don't know if this is normal.
-Bank1 & Bank2 Crossover counts... Bank 2 stays mainly around 90, I read the range should be 0-250. Bank 1 However poll-vults over 250 up to 1,100 at times...???
Any other data to help me, I'll let ya know... thank you!